Discharge mechanism for fluid under high pressure



Aug. 29, 1933. w. 1. CARPENTER 1,924,537

DISCHARGE MECHANISM FOR FLUID UNDER HIGH PRESSURE Filed'NOV. 16, 1931 61 69 jlffJwV'J.

1 16 '"1 L 231712 JQ 2@ Y e7 51 e@ ,Parenteel Aug; 29, 193s l My invention relates toa discharge mechanism for fluids underY high, pressure 4particularlyde? signed for use in connection'iwith syringefor dental work, but it is :to be vunderstood that it j lo leakagefvvhen 'active and inactive and or` accurately gauging when inusethedischarge therefrom from astrearn under full pressureto a succession of ,intermittent dropsyincluding an ex@ tremely sensitive, controllable, valvular device for 15V discharge controland' an adjustable,` normally concealed and 4protectedvalve adjuster and outlet inemberco-related `with the valve of the said de-` vice for limiting the extent of yits seating ,surface Vand .tocompensate for-,Wear upon the seating surface of :the valve resulting in an,- increased A period of usev for the latter;having'its outlet ang-` ularlyVv disposed to its lintake andgincluding an outlet member, a valvular device for closing and opening, said member and withA the ,device'including a spring controlled reciprocatyvalve stem;

'a compressible, flexible, contractible andlextend- ,ible packingv element` inthe `form of a diaphragm 'encompassingthemvalve stem` and acting automaticallyto permanently grip the latter to prevent leakage when the stem is stationary and dur--v provided with a normallyv seating spring pressed, dischargev controlling valvular devicey including a Vresilientyvalve,having aleading corner foi,bear ingagainstiarigidseat to preventleakage .when the valve is closed; havinga resilient valve coacti l ing withL a rigid seat-and4 an extendible, iiexible;V V contractible and compressible" packing element coacting with the stein of the valve and the body of thedevice to prevent leakage when the syringe is not 'in use; provided with a'detachable nozzle coacting with the outlet member'ifor dischargev and normally preventing the adjustment of said member; .with `a conveniently'actuated, natural 44:75gripping element Vfor shifting the valvular device for discharge control; `with a shiitable hand grip andfa shiitable linger or thumb lever connected 'with thefvalv'e stem vof the valvular Ydevice for controlling the latter; and to attainft'hese ends 50 compact, conveniently controlled and a compara*- tively inexpensive structurel `To the above ends essentially and others Awhich may hereinafter appean my inver 1tlion consists,` Voff such par-ts and combination of `such parts that Peking elemente fer-libe. staffer' ihevalvulaf `threads 9 `anda concave outerface v10.

ing the movement of the-stem in either direction; l Y l The'controlling,valveihousing'a o includesa`-` `11extends laterally frompart`4l by a simple, strongdurable, thoroughlyl eiflciena 'FOR FLUID all' wiihinfine'scobzsf the i,

In thedravving:

' i. "UNTED ',.STTES'i-PATENT i M "i DISCHARGE MECHAnrsM y y j -UNDER nylonrmissolm i y v''verweer-,1.,capiente@Norfolk, va' l Applicatiq November 16', `1931' serially). 575,3'76,y A

ention as claimedL Figureilis'alverticalfsectional view ofafsyringe showing the Vadaptationv therewithjof a discharge, f Y mechanism, in accordance lwith my, invention and Withfthe discharge controlling valve in open vposition. A'

valvular device.

,Figures Sand 6' are fragme tary sectional `lde-` tals illustrating lmodifiedforms of ,f diaphragm device,

ing atubular portion-f2 vvvhiclfi opens latene end into a tubular portion 31dispo`sed atfrightjangles tofsaid end; of DOrtIvl'Z-j ,ThE/ID Figure"3jis a vperspec'tive` yvievif,ofythe outlet 1 1011"-3 consti# y tutes a ontronmg' valve `hensing"ffennui' Lef :en intermediate part 4 which isf integral-With portion y 801- end and Shaving afrear "endg wall" jprov'ided `with areduced extension e provided withjperipiiear 2` and providing a chambe'n5opnjat itsfforward, a ,l

an axial' openingfj.` Thefportion opens into-l Y. .Y chamber 5;. vThe part 4 at its rear is fcirrriekiwith f Apair'of outer `parts,`\1n1,`41`2, the finjznerf"beingLof'V .:v cap like contouxfhavinginternal,threadsl 13 `for,v

engagement with threadsV 9 to. secure it "against :portion 2 and` part 1,4. v j'lhepart.11A-hasanaxiali,

opening `14 aligning with opening anda` con-"1Vy with face 15-` provides af chamber '116. L The part:

The t part ,1211s "of y tubular' form aiidiiasffit in-g ner face formed of` a'portiofoffuniiorm diameter,

as ati?, a portion ofimiformfqiameter,hasfat'18 n 10o 1 andabortion19.,WhichgraduallytdecreasesinV and which of les's'di'arn'eter than portion 17,

'diameter -from'portionl'fi tolportiongl' and prof 1 vides a tapered valves'eatl--A lThe"1; art,12 has its outer face formedof aportionfof uniformfdi-` ameter Yasl at 20 and,I thei "r'rnainingfportion .'21A ,105

of its louter' `falce',gradually;"decreasingjnt diev I ameterfrom thefoiiter end offportion 20 thereby.

forming "a1, peripheral shoulder'j22f The Setting up Aof the` out'erface'jof part',` ll2 inthefmannergfas 4 ,j

stated' foirnsfthe vlatter- ,af lcylindrical inner f par.t 23 and a tapered outer part 24, the latter `being formed with spaced annular grooves '25.

The cylindrical part 23 at its outer. end has diametrically opposed lugs 26 for a purpose to 'be presently referred to and the inner endvof part 23 is seated in-a rabbet 27 `formed on Vthe inner face of -part 4,'as well'as threadedly connecting with. the` latter. The part 23 farms a continuation of chamber 5. The inner face portionl ofv part 12 is threaded throughout.l vEncompassf ing the tapered partl 24 and yengaging in the grooves 25 isa packing means 28. Asshown the, portion 2 of body part lhas attached thereto a! ilexible water or fluid supply line 29 and extending into portion-2 is akheating element 30. for

the water or fluid.' Surrounding and clamped to the portion 2 is a flanged strap 31 carrying piv-' 1 ots 32,. only one shown, for a hand grippedvalve controlling element 33` which is disposedl lengthwiseof and spaced from portion 2. The element 33 has onefend formed with a head 34 vspaced fromportion 3. The element 33 ismounted on pivots 32 and connected to. strap '31 by 'such piv` 4ots).VH

' The controllable valvular device for control-y ling discharge from vthe syringe comprises a cylindrical bearing vcap 35 disposed within and `lengthwiseof portion 3 of.body part 1. Thecap 35 opens in the direction' towards inneriface por- ".tion 19 vof partv 12.` The cap 35 alsoprovides a valveguide and by-pass andrides against the inner. face portionof part .12.A The periphery of .cap 25 is formed from end to end with spaced channels-Bto provide 'by-pass means for the water or fluid from chamber 5 intopart 12 forwardly of cap 35.V yMounted in, snugly engag` "ing the inner face and extended forwardly of the open'- end of c ap '35 '..is .acompressibleland entendiblefvalve 37-of circular' crossv sectionand formed. witha leading corner 38. 'The valve 37 issecured to cap 35fby the holdfast means 39.

Extending through and rigid with the closed endk of cap 35, throughthe valve 37', projecting from -the .forward end of fth'eflatter,V extended'wrearwardly yfrom cap 3.5, passingthrough openings '7 and 1 4 vand extended rearwardly frornpart 11is afvalve stem 40 having its rear endgportion 41 peripherally threaded. That end oi" v stem 4() i whichfex'tends from, valve 37 isindicated at 42. '.The" stern 40 isDf circular crossv section. Surrounding the stem 40 and'abutting the rear end ,ofV cap 3'5is. acoiled controlling spring 43 which also abuts end'wall 6 of chamber'.

.'Frictionally Vand snugly gripping stern 40 isa non-'leak preventiveor sealingelement 44 pos-` fsessing compressibla flexible, contractible and iis.

extendible characteristics andjin the form of a circular diaphragm. Thestem 4U is positioned axially of. element 44 andthe latter ilexes in op`-v posite directions on the reciprocatory movement ofV stem 40, ,at the Sametime snuglyengages the latter to prevent leakage. 'I h'e element 44 is arrangedinchamber v16 unde'r a state of compression whereby its outer edge snuglyfengages the innerlfac'e of partl 11 to preventleakage; The

element 44 at "alll times snugly engages stemz 40 and part 11. The', central portion.' of element 44 will iexv` alternately in Opposite directions onY the movement of stem @40 inv opposite directions;

`On "the movement of.the`stem in one direction 'such'central portion Vwillhave an extendible and 'contraetible` action ywithjrespectv to the stem to preventleakage aroundv the latter, that Visto say afportion of.' the wall' of the axial opening45 of element 44- Will Ycentrac't andI its remaining por- 24 or partV 12.

` syringe.

tion extend to snugly engage stem 40, or inother words, the wall of opening 45 at one side pulls away andthe wall at its other side is tightly seated with respect to; the stem. This action also Apermits the fluid togcontact with. suchy wall to prevent the material, such asV rubber from which the element 44 is constructed fromdry rotting andcrackingthereby maintaining the characteristies, as referred to of the element 44'.

` Threadedly engaging with the threaded inner face portion 18' ofA part 12` is a peripherally .threaded combinedvalve adjuster and' fluid outlet member'l having its outerend edgeV formed with1 a'pair of Vdialnetrcally disposed notches 47.y The inner end of member 46 isencompassed by the tapered valve seat provided by the inner face portion 190i part 12. ber 46is extended from the outer end ofpart arranged inthe path 'ofthe end 42 of rod 40. The'valve 37 has its leading corner 33 bind against the tapered 'valve seat, but the extent of the surface of valve 37 engaging its seat is controlled by end 42 of ystem 40` abutting the innerl end of member 46. The extent of seating is adjusted or controlled by member 46v as the latter can be adjusted towards and from theend 42 of stem 40..

The valve 37v is .normally heldr against 'its'seat by the controlling spring ,43' but the action of the-latter is limitedby theicoactionof stem 40 and member 46.

The notched end of mein# The inner end of member 46 is The syringe includesl a nozzle 478.y formed at yits inner end with a frustoeonoidal hollow extenysion 49 having' its rear end' formed'fwith an out- 1I() sion 49 encompasses and is .seated onthe pack. W

wardly directed'annular flange 50. The extening 28.. The part`51 ofA the-nozzle 48 aligns with rIhe body of extension 49 is ofiless thickness than that and forms'a continuation of*r the outer faceof thek nozzler body.r f l the outlet channel 52 provided .by member 46.

A spring controlled coupling device is employed Y 'for connecting detachably the nozzlef. in posi# tion. The said device includes a sleeve 53 having bayonet shaped slots 54 whichV coact with'the'lugs 26 for d etachably connecting sleeve 53'toport'ion` The sleeve 53 has. its outer end formed with an rinwardly* extending' flange'. 55'.

or part l2.

Arranged within sleeve 53, interposed between flanges 'and 55 and surrounding extension `49 is a coiled spring 56 functioning to force nozzle 48 towards section'or part 12.V x VThe nozzle when coupled to section or part 12- acts as a concealing means for.. members '46," Y

and the latter cannot be adjusted until the nozzle is detached.v On detaching of V.the ynozzle the member 46 can be conveniently adjustedv ley-,any`

suitable tool-capable of engaging in the notches Mounted on Vand threadedly engagingwith the end portion 41 of` stern 40 is'an interiorly threaded collar 57 formed Ywith an annular peripheral groove 58. Extended from section or part 4 is anv arm 59 towhich is pivotally connected, as at 60 a lever 61v formedwith a yoke 62 for seatingY f The lever 6l isoperatedgby'the i portion 12 of body part 1. A. capinut 64 is'se-v cured to stein 40and'bears against collar 57. The 1.53

element 33 and lever Glare employedA for shifting stem 40 rearwardly against the action of :the con" trolling spring 43; When pressure isrelieved romlelement 33 `or lever"6l the spring acts to restore lvalve 37 to closure position.: A

Figures 5 and "6 illustrate diferent'forms circular leakpreventing: elements 65, :66 re` spectively, of the diaphragm type, and which possessesthefsame characteristicsas the element 44. The elements 65,466 are of different cross `sectional contoursand'rdiiferent .from the cross sectional contourofelement 44. VElements 65 and f vfunction in the same` manner as Velement 44. What'I claim 1s:,-" y y. 1 f i .f

12 In a` dischargermechanism for Iluids under high pressure, a spring controlled valvular device for controlling discharge including a valve housing having valve seat, a: compressible and elastic valve and arvalve stem, and anfadjustable" combined valve adjuster and-outlet member ar-` `ranged in the path of and coacting-With said stem for limiting the extentof'the seating surface of `'the valveonthevalve seat.

2. In a discharge mechanismfor fluids under high pressure, aspring controlled valvular vdevice for controlling dischargeincluding-a.valve housy ing having-a valve 'seat`,"a Vcon'ijnessible andv elastic valve andra valve stem, an adjustable combined valve adjuster and outlet member arranged in the .path of and coacting with said,

stem=for limiting the extent of the seatingsurface of the valve on the valve seat, `and a' detachable nozzle for concealing Tsaidme'mber.Y l

`3. In a discharge mechanism for fluids under high pressure, a spring controlled valvulargdevice for controlling discharge `including a vcompres-V sible and elastic valve and a valve stern,f an

j surface ofthe valve on 'the valve seat, 'a housing" housing means. Y

-adjustable combinedvalve adjuster andoutlet member arranged in the path of and coacting with said stemv for limiting the extent of` seating means for said device and member` and including a valve seat, and said Ydeviceincluding afcom-.

bined guide and by-pa'ss member carrying said valve andl riding against the inner Vface of said 4. In a discharge mechanism for iluidseunder high pressure, a spring controlled valvular device for` controlling discharge including acompressible and elastic valve and a valve stem, an adjust-f.

able combined valve adjuster and outlet `member arranged in the path vof and coacting with: said stem for limiting the extent of seating surfacefof,

the valve on the valve seat, a detachable nozzle for concealing said member, a'housing means for said device and member and including a valve seat, and 'said device including a combined guide Y. ico'- and b'y-passV member' carrying said valve and riding against the inner face of said housing means. l

5. In a discharge mechanism for fluids ,under high pressure, a spring controlled valvular device v for controlling discharge including a valvehousing havinglavalve seat,l a compressible and elasticr valve and a valve stem, the latter having one'. end eI-:tended from said valve, and an adjustable combined valve adjuster and outletmember arranged in the path of said stemand coacting Withsaid eend for limiting-the extent of seating surface"v of the valve on the valveseat. i v

, 6. `In a discharge fm'echanism for iiuids under high pressure, aspring controlled valvular device for controlling discharge including a valve heus-4 ing having a valve seat, a compressible 'and i elastic valve anda valve stem, the latter having.

. said i 'valv oneA end. extended from'. said valve, "an --adjustable l e" combined valve adjusterf and `outlet:` member" arl` f1 ranged in the path Vof saidstem' andcacti'ng with said end forlimiting thefez'tent of Aseatingsurface nozzle for concealing said mernbeix` X .7.3111 adischarge mechanism forkiiuids'c` under high pressure, a springcontrolled valvular-[device ,f .for controlling discharge including afcomprssible and-Y elasticl` valve anda `valve stem, thel latter having i oneend extended irorr'isaid valve; an :adj-i justable. combined valvef^adjustery andvwoutlet member arranged in the path'of said stein andfcfo V acting `with said endjforflimitingthe*ex-tentery seating surrfaceof thefvalve on thelvalve seat,'a

said housing-means.l Y

said housing means.` ,l Y

9. I n a discharge mechanism forfluidsV under high pressure, a housing ormingjmeans providing"` z .avalve .'seat, a discharge controlling valvular de-V 1 vicewithinthe housing andincluding aspring controlled combinedvalve guide and by-passmember riding against the Wally of said means and carryinga resilient valve, thevalve being extendedv fromone end of saidrr'iember,` a valve stem carry;

ing said inemberaand valve and extendedfrom' V`one end ofthe .latter-,andfrornisaidvmember, a ff- 'compressibla exible,extendibleand cfontractible"` non-leak preventing "element of diaphragm form carried l by vthe stem, spaced` from said member, l

positioned in said housing means and vpermanent- 1y compressed by thei inner face of Ythe lattenand housing means forsaid device' angl memberiand vincluding Vavalve 4seat/andsaid devieeincludng alcombinedguide and byhpassrnember carrying e and riding against3sthe, inner face [of Y an adjustable,combinedvalve adjuster and-outlet member positioned Within saidmeans'and coactf' ing with that end ofthe 'stemprojecting from said valve toV limit the extentofthe seating surfaceof the valveonthe valve seat.:l

10. Inj a discharge mechanism*for fluidsfunder valve and a' valve stem, an fadjustablecombined `valve adjuster and outlet' member arrangedlm the path of and'coacting with said stemlfo'r limiting and outlet member, land;` means 1for 4deta'chably f7 connectingthenozzle in position 11. In a discharge mechanism for'luids `under `high pressure, a housing means providing a valve" A l chamber, a'jdiaphragmchamber andavalvejrseat',v v "Vl anadjustable combined valve-adjuster andoutlet 'i member carried bythe vhousing forwardly lof ,theA` .valve chamber and having lits innerv end encomf5 f` l passed by` said seatf-'a ycompressible and elastic valve, a combined valve guide', valvecarrier and vbyspass, element riding` against rthe Wall ofthe s c Nhigh pressure; `a spring controlled'valvulardevice "for controlling discharge including 'a'valve nous; Y `ing having'a valve seat, a compressible 'andL elastic vthe' extent of `seating 'surface ofthe valve ronthe j M .valve seata nozzle concealing sai'dvalveadju'stere the diaphragmlchamber', encompassing and'per-Y` `high pressure, a housing having a valve seat,a

extending through saidA chamber, element and valve and opposing theinner end of said member,`

and a Vcompressedi extendiblecontractible 'and flexible non-leakage ,preventive element in the forino a diaphragm snugly engaging YtheWall of Y manentlysnugly gripping said'stem. 4

l12. In a discharge mechanism for` fluids'under high: compression a valvular device *for controlling discharge therefrom and including avalve housing havinga valve seat, a compressible and elastic valve cooperating with saidseat and a valve stem, and an adjustable'combined valve ad-l justing and outlet member Within the housing the surface of the valve engaging said seat.

13. In awdischarge mechanism for iiuidsunder high pressure, a housing means providing a valve chamber; aldiaphragm chamber l and a valve seat,

an adjustable combined'valve adjuster and outlet member carried by the-housing forwardly ofthe j valve-chamber andvhaving its inner end encom- 'passed by v4said seat, a compress'ibleiand'elastic v valve, a combined Valve guide, valve carrier and by-pass element lriding against thevvall ofthe f valve chamber, a shiftable spring'controlledvalve stem slidably mounted in said housing means and extending through said, chamber, element and Y valve andropposing the inner end ofsaid member;

sov

a compressed, extendible, contractible and flexible non-leakage preventive element in the form of a diaphragm snugly engaging the wall ofthe diaphragm chamber, encompassing andpermanent-l ly snugly gripping said stern, anda nozzle detachably connected to said meansfor concealing the outer end of said member.

141 In a discharge mechanism for luidsfunder valvular device for .controlling discharge'of the uid and including a stemsand aV compres'sible valve,A and an adjustablel combined Valve adjuster and outlet membercoactin'g with said stem, said member being in thev form of a `peripherally threaded tube notched atene end, Vsaid member arranged in the path of the stem to be engaged bythe latter for controllingthe extent of the sur-` face of the valve engaging said seat.

15. Ina discharge mechanism for iiuids unde high pressure', in' combinationa valvular device including a valve housing having a valveseat and"r a discharge o controlling. valve coacting with said f seat, and an adjustable combined Valve adjuster and outlet member-respectively for said discharge controlling valveand fior discharge from said valve 'housing said member beingof tubular form, peripherally threaded throughout for adjustable connection to suchhousing and forming a dis charge channehsaidmember arranged in the path of thevalve. for arresting the movement of the l'atterato control the extent of the surface ofV the valve engaging said seat. h c CARPIilNTElE,v` 

